function validateEmail(emailValue){
var emailvalidation = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
   if(!emailvalidation.test(emailValue)){
     return 0;
    }else{
      return 1;
    }
}